chrome/browser/ui/webui/options/chromeos/date_time_options_handler.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_DATE_TIME_OPTIONS_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_DATE_TIME_OPTIONS_HANDLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "chrome/browser/ui/webui/options/options_ui.h"
  10 #include "chromeos/dbus/system_clock_client.h"
  11
  12 namespace chromeos {
  13 namespace options {
  14
  15 // Chrome OS handler for the set date/time link in the Advanced settings page.
  16 class DateTimeOptionsHandler : public ::options::OptionsPageUIHandler,
  17                                public SystemClockClient::Observer {
  18  public:
  19   DateTimeOptionsHandler();
  20   ~DateTimeOptionsHandler() override;
  21
  22   // OptionsPageUIHandler:
  23   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
  24   void InitializeHandler() override;
  25   void InitializePage() override;
  26   void RegisterMessages() override;
  27
  28  private:
  29   // SystemClockClient::Observer:
  30   void SystemClockCanSetTimeChanged(bool can_set_time) override;
  31
  32   // Callback for the "showSetTime" message to show the set time dialog. No
  33   // arguments are expected.
  34   void HandleShowSetTime(const base::ListValue* args);
  35
  36   // Only expose the button and dialog if the system time can be set.
  37   bool can_set_time_;
  38   bool page_initialized_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(DateTimeOptionsHandler);
  41 };
  42
  43 }  // namespace options
  44 }  // namespace chromeos
  45
  46 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_DATE_TIME_OPTIONS_HANDLER_H_